Add Mac and Windows RandomOrder bots

tools/mb/mb_config.pyl

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   # This is a map of buildbot master names -> buildbot builder names ->
   # config names (where each config name is a key in the 'configs' dict,
   # below). MB uses this dict to look up which config to use for a given bot.
   'masters': {
     'chromeos.chrome': {
@@ skipping 175 matching lines @@
       'Site Isolation Android': 'android_release_bot_minimal_symbols_arm64',
       'Site Isolation Linux': 'release_trybot',
       'Site Isolation Win': 'release_trybot_x86',
       'ThinLTO Linux ToT': 'thin_lto_clang_tot_release_static',
       'UBSanVptr Linux': 'ubsan_vptr_release_bot',
       'WebKit Linux - TraceWrappables': 'debug_bot',
       'WebKit Linux - WPTServe': 'release_bot',
       'WebKit Mac - WPTServe': 'release_bot',
       'WebKit Win - WPTServe': 'release_bot_x86',
       'WebKit Linux - RandomOrder': 'release_bot',
+      'WebKit Mac - RandomOrder': 'release_bot',
+      'WebKit Win - RandomOrder': 'release_bot_x86', # should this be x86?

[Dirk Pranke, 2016/11/18 20:17:45]

I don't think it matters too much, but I'd probably leave it as x86.

       'Win 10 Fast Ring': 'release_trybot',
       'Windows deterministic': 'release_bot_x86',
       'Windows Clang deterministic': 'clang_release_bot_minimal_symbols_x86',
     },
 
     'chromium.goma': {
       'Chromium Linux Goma Staging': 'release_bot',
       'Chromium Mac Goma Staging': 'release_bot',
       'CrWinGomaStaging': 'release_bot_x86',
     },
@@ skipping 1614 matching lines @@
 
     'x64': {
       'gn_args': 'target_cpu="x64"',
     },
 
     'x86': {
       'gn_args': 'target_cpu="x86"',
     },
   },
 }